Top-roll clearer board and apron clip for drawing frames



A. H. LAMBERT AND J. DUBOIS. TOP ROLL CLEARER BOARDAND APRON CLIP FOR DRAWING FRAMES.

APPLICATION FILED MAR. 23, 192i.

Patented Aug. 29,

LAZZI 5.,

Top-Roll Clearer Boards and Apron ARTHUR H. LAMBERT AND JOSEPH D'UBOIS, 0F BIDDEFORD,MAINE.

TOP-ROLL CLEAREB, BOARD AND APRON CLIP FOR DRAWING FRAMES.

Specification of Letters Patent.

Patented Aug. 29, 1922.

Application filed March 23, 1921. Serial No. 454,738.

T 0 all whom it may concern.

Be it known that we, ARTHUR H. LAMBERT and Josnrrr Donors, citizens of the United States, residing at Biddeford, in the county of York and State of Maine, have invented certain new and useful Improvements in Clips for Drawing Frames, of which the following is a specification, reference being had to the accompanying drawings.

This invention relates to spinning machines, and particularly to the clearers of the upper draft rolls of drawing frames.

These clearers as commonly constructed consist of a board having staple-like wires attached at intervals to the bottom of the board facing the top rolls, there being an apron of flannel or like material attached to each pair of supporting wires. These aprons rest lightly against the top of the rolls and as the rolls revolve the loose cotton is gradually collected by the outer surface of the apron. In the ordinary construction of these aprons, the staple-like wires which are attached to the board have relatively straight legs which are driven into the wood to an extent deemed necessary by the person applying the staples and as a consequence not only are these staplelike wires driven in different distances, but the vstaple-like wires oftentimes are accidentally forced into the board to a greater extent than desired and as a consequence the aprons, would get out of proper adjustment.

One of the objects of our invention is to prevent this maladjustment of the supporting wires of the aprons by so forming the wires that they cannot be forced in beyond a predetermined amount either when they are initially driven into the board or in actual use so that each apron is supported a predetermined distance from the board and all of the aprons of the clearer board are supported at the same distance from the face of the board and, therefore, have the same contact with the leather-covered top rolls. A further object is to so mount the staplelike wire holding members uponthe front of the board that-they are lower than the wire members at therear of the board, thus causing all roving yarn to run upon the roll provided for the same and preventing the roving yarn from winding upon the leathercovered top roll which tends to cause the leather on these top rolls to become worn and torn.

Other objects will appear in the course of the following description,

Our invention. is illustrated in the accompanying drawings, wherein.

Figure 1. is a fragmentary vertical section through a drawing frame of ordinary con struction, showing our improved clearer board applied thereto;

Figure 2 is a transverse section of the clearer board;

Figure 3 is a fragmentary longitudinal section of the clearer board;

Figure 4 is an under side plan view of the clearer board;

Figure 5 is an elevation of the staple;

Figure 6 is a face view of the upper and lower drawing rolls and aportion of the board.

Referring to these drawings, 10 designates the top roll clearer board of'a spinning frame and 11 designates generally the series of top rolls, while 12 designates the bottom draft rolls. This top board is supported in any suitable manner upon the top rolls, and it will be understood that these rolls are to be supported in the ordinary roller stand and provided with the usual bearings for the front roll, the middle rolland the back roll. The top, rolls are of they usual form and we have illustrated what is known as a single boss roll. Each of these rolls 11 is formed with trunnions 13 at its ends. a middle reduced portion 14- and a pair of leather-covered, cylindrical portions 15 beneath which the yarn passes, the yarn passing between the fluted lower draft rolls 12 j and the leather-covered rollers 11. So far, the'parts which we have described are the parts commonly found in. the drawing frames of spinning machines, it being understood, of course, that ordinarily on the bottom of the clearer board 10 there are disposed the transversely extending aprons of flannel which rest upon the top rolls 11 and bear upon the leather faces of these top, rolls.

The improvement in the top board which we have devised consists in forming the top board at its forward edge with a downwardly extending flange 16 which extends downward about 3:" below the level of the top board. This top board is cut out at intervals, as at 17, to support the bearings for the rolls and is longitudinally grooved on its under face, as at 18, as is usual in top boards to accemmodate these bearings. The

aprons 19 are endless and formed of flannel,

as is usual but these aprons are supported by supporting clips or staples of a peculiar form, one ofwhich staples is illustrated in Qlprevent the staple from being driven into the wood to more than a certain extent and that they, therefore, space the cross bar 20 accurately from the face of the clearer board.

It will also be seen that one series of these apron supporting staples is driven into the flange 16 so that these staples are thus lower than the staples which are. driven into the rear margin of the board so that the aprons supported on the staples have their lower surfaces inclined downward and forward generally speaking relative to the plane of the under face of the clearer board when not, applied to the top rolls 11. 'By forming the board with the depending flange 16 and attaching the apron to staples fixed in this flange, the inner flight of the apron is supported atall times in spaced relation to the under surface of the clearer board and does notzcom'e in. contact with this clearer board, as it does in the. ordinary construction of clearer board; The staples cannot be forced any further inward than the shoulders 21 and these shoulders thus formv a stop for the'workman who drives, the staples to prevent him from accidentally driving the staple deeper than it should be and thus the cross bar 20 of all the staples are disposed a uniform distance from the board and, therefore, holds all; the aprons a uniform distance from the inner face of the board in spaced relation to the face of the board,

It will furthen be noted that this clearer board is longer at the front and lower down at,the front than the ordinary clearer board, that s our improved board will come forw'ard'above the center, and lower down in front'than the old board, When the clearer board is "in use and its weight is resting upon the" apron, that portion of the apron which is rearward of the front roll is parallel with the board, butfrom the top center of the front r'oll th'e' apron curves downward and forward over the-face of the front roll or has a downward'dr'op of aboubfi,iwhich causes the: cott or apron to extend down over the center of the'jtop rolli thereby preventing the sliyer or end when it breaks from running up and around the top roll It in orden to provide for -th'lscurvatnre' of the-forwardend of the, apron that the "space between the forward construction prevents the end when'it breaks from going up and around the. top roll and forces it to go down around the scavenger roll that is ordinarily provided for that purpose on a spinning frame. This construction prevents the leather covering of the.

top rolls from becoming torn, Worn andcuti This means the elimination of a relatively large upkeep cost, as our invention Will'sa-Ve' these rolls from beingfdestroyed. I

We claim 1 A1 clearing board for the draft roll's'off drawing frames having pairs of staples driven into the under face of the board atthe opposite edges thereof',.said staples being formed with shoulders limiting the. eXtentf to which the staples'may be driven into the board. said shoulders engaging the underface, of the board, and aprons supported by said staples.

2. The combination with the clearing; board for the'top rolls of'drawing frames,

of a series of. staples on the. opposite side edges thereof and depending therefrom, each of said staples being bent to 'form', a

cross bar and inwardly extending shanks from opposite ends. of the cross bar, each of said shanks being bent adjacent the cross bar to form. a stop limiting the inward move ment of the staple into the board,the shanks being inserted 'into the board with [their shoulders bearing against, the under face of the board. r v

3. The combination I with the -.clearing board for the toprolls of drawing-frames, of

'a series of staples driven into the boar-don:

the opposite side edges thereof and depend}; ing therefrom, the material forming said staples being bent at right anglesto the} cross I barjat the ends of the cross bar, then being bent app roximately parallel tothe cross bar and toward each other to form stops, then extending at right angles to the cross bar to thereby form shanks, said shanks being. in-

serted into the clearer boards with the stops I bearing'against the under face of the board, said stops'thus limiting the extent to which the shanksmaybe driven into the board, and aprons mounted upon said shanks.v

4;. clearer board for the top rolls of drawing frameshaving a depending flange uponits forward edge, forward staples driv en into this flange anddepending below the same, rear staples driven into thev rear edge e of the member and depending below the same, and aprons carried by said staples and distance from the face of the board than at their rear ends and the distance between the forward and rear ends of the aprons being greater than the distance between the forward and rear faces of the forward and rear rolls respectively whereby to cause the apron to extend down over the front r011.

In testimony whereof we hereunto aflix our signatures.

ARTHUR H. LAMBERT. JOSEPH DUBOIS. 

